Chables sumnbr tainter



(No Model.)

0. S. TAINTER.

GRAPHOPHONIG TABLET.

No. 385,887. Patented July 10, 1888.

FIGJ- FlC-Lll- UNITED STATES PATENT OFFICE. 1

CHARLES SUMNER TAIN'PER, OF WASHINGTON, DISTRICT-OF COLUMBIA.

GRAPHOPHONIC TABLET.

' srncxmcmxom forming part of Letters Patent No. 385,887, dated July 10, 1888 Original application iiled DecemberM, 1887. Serial No. 258.814. .Divlded and this application flled AiIri13,'i888. Serial no;

(No model.)

To all whom, it may concern: p

Be it known that I, CHARLES SUMNER Tnm'rnn, of Washington, in the District 01'00 specification.

This invention has reference to theconstruetion of tablets for use in graphophones,v or instruments for recording andreproducing vocal and other sounds, the tablet being the medium in or upon which thesound-record is out by the recording-style. Such tablets are composed generally of a base or foundation of a material more or less rigid and a surface coating of wax Ora-waxy composition suitable for recording the vibrationsot' the style. The tablets are sometimes cylindrical and sometimes iiat. l

:The present invention relates tothe production of flat tablets.

Many difliculties have been eucounted in the construction of tablets of this kind. The essential requirements are that they should be cheap, light,easily made,'and possess sufficient rigidity to preserve their shape under all ordinary conditions.

' plane or flat surface of the wax would, of course,

impair the utility of the tablet.

The materials available for the easy and economical construction of cylindrical tablets are found unsuitable for, the base or foundation of a flat tablet.

The least alteration of the Experiment has been made with paper, card-board, leather, leatherwarping is nxeiy to occur at any subsequent time'by reason of atmospheric changes.

In attempting to use card-board and other porous material much trouble is encountered 4 on-account of air-bubbles formed in the wax by airheld in the card-board.. I havefound that these difficulties can be overcome, and a successful flat tablet can be produced by using thin sheet metal asthe base or foundation, and the present invention consists in a tablet composed of a flat base of metal having a layer of wax thereon. Such a tablet is illustrated in the accompanying drawings, whichform part spective view, and Fig. II asection.

The base a is athin metal disk (sheet-iron or tin will answer the purpose) turned up. around the --edge, forming a sort of d'ish,"-jni of this specification, Figure I being aperwhich the waxyb, is poured while in a melted t state.

should be circular, as shown 'in thedrawings,

This application is a division, and cont-inna- The turning upof the edge of the plate. or disk (1 contributes greatly to the rigidity tion of my application filed December 24, I887.

Serial No. 258, 874.

I claim-- As an article of manufacturegagraphophonicf tablet composed of a flat plate or disk of metal having a turned up edge, and a layer of waxor a waxy composition? thereon, substantially as described.-

. 7 In testimony whereof I have signed this specification in the ing witnesses.

CHARLES Witnesses:

EnitnK'BLne RIVEB, PHILIP. MAURO.

presence of two subscrib- SUMNER TAI'NTEB: 

